STM32的磁致伸缩智能位移传感器研究  

Research on Magnetostrictive Intelligent Displacement Sensor Based on STM32

作　　者：耿圣博 关海静 耿景伯 王萌 王鑫 张波[4] Geng Shengbo;Guan Haijing;Geng Jingbo;Wang Meng;Wang Xin;Zhang Bo(Aero Geophysical Survey&Remote Sensing Center,Beijing 100083,China;Postal Savings Bank of China;Marine Disaster Reduction Center;University of Science and Technology Beijing)

机构地区：[1]中国自然资源航空物探遥感中心,北京100083 [2]中国邮政储蓄银行股份有限公司 [3]自然资源部海洋减灾中心 [4]北京科技大学

出　　处：《单片机与嵌入式系统应用》2020年第4期46-50,共5页Microcontrollers & Embedded Systems

基　　金：中央高校基本科研业务费资金资助项目——用于地下金属目标物探测的弱磁传感器阵列算法机理研究(FRF-GF-18-020B)。

摘　　要：STM32F103VET6单片机因其功耗低、外设丰富等特性,可作为磁致伸缩位移传感器的微控制单元。通过实验选取合适的铁镓合金作为磁滞伸缩位移传感器的波导丝,以功能强大的STM32F103VET6单片机为系统核心,发射指定参数的3.3 V激励脉冲,该激励脉冲经放大后加载在波导丝上从而激发出扭转波,将扭转波滤波放大。若STM32自带ADC采集到扭转波,令指定I/O发出高电平,以此高电平信号代替扭转波信号,计算从激励脉冲发出到接收高电平的时间,从而得到待测距离。STM32F103VET6 can be used as a micro control unit of magnetostrictive displacement sensor.Through experiments,suitable fe-gallium alloy is selected as waveguide wire of magnetostrictive displacement sensor.With STM32 microcontroller as the core of the system,3.3 V excitation pulse with specified parameters is emitted,which is amplified and loaded on waveguide wire to stimulate torsion wave.The torsional waves are amplified by filtering.If STM32 collects torsional wave with A/D,make the specified I/O emit a high level signal to replace the torsional wave signal.The time from the excitation pulse to the high level is calculated to obtain the distance to be measured.

关 键 词：磁致伸缩 STM32 位移传感器 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]